Pressure control apparatus and device control system

The pressure control device addresses the challenge of converging fluid pressure to a target pressure by utilizing separate flow paths and a control circuit to manage supply and exhaust valves, achieving precise and efficient pressure control.

WO2025069574A1 Publication Date: 2025-04-03KOGANEI
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Patent Information

Application Number
PCT/JP2024/020247
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-26
Filing Date
2024-06-03
Publication Date
2025-04-03

AI Technical Summary

Technical Problem

Existing pressure control devices face challenges in accurately converging fluid pressure to a target pressure due to delays in pressure response, especially when the connection between the pressure control device and the controlled device is long, leading to hunting of fluid pressure.

Method used

The pressure control device features a main body with separate input, output, sensor, and exhaust flow paths, including a supply valve, an exhaust valve, and a control circuit section that controls these valves based on pressure signals from a dedicated pressure sensor, ensuring proper fluid pressure control.

Benefits of technology

This configuration allows for precise control of fluid pressure, reducing delays and fluctuations, thereby effectively converging the fluid pressure to the target pressure, even in systems with longer connection lengths.

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Abstract

This pressure control apparatus comprises a body provided with an input flow path in communication with an input port, an output flow path in communication with an output port, a sensor flow path in communication with a sensor port, and an exhaust flow path in communication with an exhaust port. The pressure control apparatus comprises an air supply valve attached to the body and connected to the input flow path. The pressure control apparatus comprises an exhaust valve attached to the body and connected through a connection flow path to the air supply valve. The pressure control apparatus comprises a control circuit that controls the air supply valve and the exhaust valve. The pressure control apparatus comprises a pressure reception unit exposed to the sensor flow path, and a pressure sensor that transmits a pressure signal to the control circuit. The output flow path and the sensor flow path are separate flow paths not in communication with each other.
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